Cylinder hone ob lapping tool



P 1932- T. F. QUIGLEY' F ','87 ,468

CYLINDER HONE on LAPPING TOOL 7 Original Filed Nov. 19, 1926 2 Sheets-Sheet 1 76 Jnren?ar film Sept. 6,1932; T. F. QUIGLEY 1,876,468 I CYLINDER ONE OR LAPPING TOOL Original Filed Nov; 19, 1926 "2 Sheets-Sheet 2 Patented Sept. 1932 UNITED, STATES PATENT; OFFICE.

THOMAS E. QUIGLEY, OF CLEVELAND, OHlIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO-

. MIOBOMATIC HON E CORPORATION, A CORPORATION OF MICHIGAN v cmnnnn norm on mrrme r001.

Application filed November 19, 1926, Serial No. 149,882. Renewed December 6, 1928.-

This invention relates to new and useful improvements incylinder hones or lapping tools forquickly and accurately honing small cylinder bores varying slightly in size or diameter, providing simple means for quickly ameter for the start of the cut, means for setagainst the stones for the cut, means for ad- I adjusting the radially expandibleabrasive stones for insertion of the hone into cylinder bores, means for quickly, adjusting the abrasive Stones to cylinder walls ofvariable diting the bone to cut a predetermined depth into cylindrwalls of variable diameter, means to quickly apply yielding pressure justabl limiting radial expansion of the stone s oes durm the cut, and means for quickly relieving t 1e cutting pressure on the stones to allow them to be resiliently retion will be hereinafter scribed.

shoe retainer.

tr'acted and the hone to be quickly withdrawn from the cylinder bore after the honing operation.

A further object of the invention is to provide separate. means for clamping, centering and setting up the hone on a lathe for dressing of the abrasive stones when worn .with a suitable device such as a diamond. 1

Other objects and features of the invenpointed out and de- In the drawings: Fig. 1 is a side view of thehone ready to be inserted into a cylinder bore with the abrasive stones contracted.

Fig. 2 is a sectional 'ew on line 2-2 of Fig.1. n

- Fig. 3 is an inside view;,of the end hone Fig. 4 is af slectijonal .view, thereof with the adaptorandretaining nut.

Fig. ,5 is a longitudinal ea-aha i... tr .thehone... v j 'i' Fig.6 is a hone end yiew.

7 ,is'a detail View of a honeshoej indicates generally .the hone body. in the i 1 form pf jet tubular element having,v a central bore 6 screw fthreadedfatthe ends thereof as at? and 8., j Ariupperor shank. portion of the body '51s"extrnau s uaie threaded as at 9 and provided with oppositely disposed Referring specifically to the. dra win'gs, 5 I v slots 46 --into which extend ends ofrod 26, adaptingit to serve as an'index means,

slots 10. The intermediate portion of the body bore 6, has a cone shaped lower end 19 and a cone shaped intermediate portion 20 connected by a reduced neck 21 to the lower portion of the plunger. The upper part of the plunger has a central bore 22 with optend transversely, a rod 25 of round cross section. The bore 22 has lower oppositely disposed opening 24 through which a rod 26 extends to act as a stop part A helical compression spring 27 is disposed in bore 22 be.- tween rods 25 and 26. This serves as resilient means for advancing plunger 18.

A knurled round tension nut- 28, threaded ,positely disposed slots 23 through which exi on body square threads 9.has a ball bearing race 29 holding ball bearings-3O which retain a tension cam collar 31 having an enlarged knurled portion 32 and oppositely'disposed cam faces 33 adapted to engagenthe ends of rod 25.

- A knurled stop nut 36, threaded onbody square threads 9, has the upper inner part thereof annularly recessed as at 37 and the top bevelled as at 38 with spaced indicating marks '39 thereon. A wire spring 41, disposed and secured within an "annular'groove 40 in nut 36," passesthrough, a ratchet dog 42 mounted in an opening 43 in the nut. An annular stop bushing 44 disposed'within annular nut recess-37 over threads 9, isprovided with ratchet teeth 45 cooperating with said dog to provide a yieldable'connection,

and provided alsowithfoppositely disposed slidabl'e onthe threaded shank bycollar 36. The bushing has afcenterm'ark47."

'1 The hone stones 48', of suitablefabrasive'material such as carborundum, are formed with 60 A plunger 18, slidably disposed within the outer cutting faces slightly rounded and relieved at the ends which are rounded. Each stone 48 is set into the recess 50 of a shoe '49 having the upper end thereof beveled as at 51, to provide an outwardly facing cam part; pressure-receiving parts in the form of steel pins 52, having the reduced portions 53 thereof welded into openings in the shoe, are beveled at the inwardly facing ends thereof, as at 54, at an angle the same as resiliently advanced plunger cones 19 and 20. The shoes 49 areset into body grooves 15 with the pins 52 extending through and slidably fitting in circular and radial or other guide openings 16 and the bevelled pin ends 54 engaging the cooperating surfaces of plunger cones 19 and 20. The stone shoes. 49 are shown as restrained by a collar 55 having an inwardly beveled face 56 engaging over shoe beveled ends 51. A knurled retaining nut or collar \57 screw threaded externally on body intermediate threads 11 carries oppositely disposed plungers 58 set in nut sockets 62 with helical compression springs 61 behind. The plungers 58 have shanks 59 extending through nut openings 63 withthe ends provlded with retaining'collars received in recesses 64. 1

Theplungers of the nut are adapted to engage and retain or resiliently to advance the collar 55,thereby retracting shoes 49.

A retaining collar 65 is provided for retaining for dressing the hone stones comprising a rear wall having a central opening 66 with a countersunk portion 67 and an outer flange 68 inwardly beveled as .at' 69 and notched as at 70.. The collar isp'ositione'd and centered by means ofplug 71 adapted to screw thread into body bore threads 8, the plug having a flange 72 fittinginto collar recess 67 and a short reduced portion 73 fitting within collar opening 66. The plug is screw threaded as at 74 below portion 7 3 to receive a nut 77 and is further extended as at 7 5with the end thereof center holed as at 76. I

An adaptor plug 83, provided for the upper hone end, has a threaded portion 78 adapted to screw thread into'the upper body bore" threads 7 and a flange 7 9,threaded portion 80 and extension 81 with a center hole 82.

l[n operationthe hone is connected to the drive shaft bya suitable coupling preferably a double. universal joint to eliminate .sIa-p of the hone in the cylinder bore. Before'inser ting' the hone'in the bore, the abrasive' stones 48 are contracted by turning and backing oft: tension nut 28, shifting the cams 33 and-' relieving the compression of spring 27 against pins 25 and 26. The stop nut 36 is also turnedtoward the'upper hone end,.

the nut 36 raising bushing 44 the bottomsof slots 46 thereinengagmgand raising pin 26 with plunger 18 Land cones 19 and 20 allowing thjel-fpins' 52 and stone shoes to be pushed in enough to allow-the hone to enter the cylinder bore. Af-terthe hone; has been iterates inserted in the cylinder: bore, the abrasive stones 48 are moved into light engagement with the bore wall by turning tension nut 28 the beveled pin ends forcing the pins, shoes and stones outwardly. The nut or collars 36 is then turned toward the upper hone end enough to engage the lower end of bushing slot 46 lightly against pin 26. The beveled face 56 of collar 55 is engaged with beveled shoe ends 51 by plungers 58 of nut 57 which is turned down to within a sixteenth of an inch of collar 55. Next, the hone is set to cut to'the desired depth in thousandths of an inch from the cylinder wall by turning the nut 36 downward or to the left the number of thousandths indicated by spaced marks 39. Translatory or longitudinal advance of pin 26 being thus limited, cutting pressure is applied to the stones 48 by turning cams 33 to the right, the raised portions 35 of the cams forcing pin 25 downward compressing spring 27 against pin 26 and plunger 18 with cones 19 and 20 engaging shoe pins 52.

During the honing" operation, the downward thrust of plunger cones 19 and 20 against the beveled pin ends 54 yieldingly forces the stones radially outward as they cut into the cylinder wall. As the shoes 49 expand, the beveled ends 51 thereof force collar 55 upward against plungers 58 and springs 61, allowing expansion of the stones,-to the limit predetermined by adjustment of collar 36.

,After completion of the honingoperation the stones. may be sufficiently contracted and the hone quickly removed from the cylinder bore by turning cams 33to the left, allowing the pin 25 to rise into the shallow cam por taining collar 65 is applied with the beveled I flange faces 69 thereof engaging and clamping the lower shoe ends by means 'of-a retaining-nut 77' threaded on threads 74 the flange notches 79 providing clearance for the stonev ends. The hone is now ready to be mounted on a lathe for turning and dressing the outer stone faces with a diamond, the plugs 71 and 83 centering the hone.

Ic'laiinzk 1. In a lapping therein, shoes guidedradially ou the body and actuated by the plunger to expand the tool, the .-combination of a tubular body, a conical plunger working shoes, a cam collar loosely mounted onthe body and havingan operating connection to the plunger including acom ressible spring, a 'nut threaded on thebody and bearin against the collar to advance the same, an a setable stop collar threaded'on the body, the plunger being provided with a projection engageable with said stop collar to limit the advancing movement of the plunger.

2. In a lapping tool, thecombination of a tubular threaded body havin longitudinal slots and radial guides, expansi le shoes mov; able in said guides, a'conical plunger movable within the body to advancesaid shoes, upper and lower cross pins carried 'by the plunger and extendin thru said slots, the plunger havingslots t ru which the upper -cross pin extends, a camcollar loosely mounted on the body and bearing against the upper cross pin, an adjusting nut screwed on the body and bearing against the collar, .9. compressible spring between the upper and lower cross pins, and a stop, collar screwed on the body in position to be engaged by the lower cross pin.

3. In a lap ing tool, the combination of a body, a set 0 radially expanding shoes carriedsthereby, means to expand the shoes,', and

1 an indicating stop device to limit the expansion of the shoes, said device comprising a collar threaded on the body, a non-rotatable ring loosely carried by the collar'and extending around the body and engageable with said means, and ayieldable connection be tween the ring and the collar.

4., In a lapping tool, the combination with a slotted body, radially expandingshoes car-' ried thereby, a plunger in the'body to-expand. the shoes; the plunger being provided with a cross pin extending thru slots'in the body, a stop collar screwed on the body, a ring loosely carried by the collar and extending around the body and having slots into which the ends of the pin-project, and a pawl and ratchet connection between the collar and the 5. In a lapping tool of the class described, the combination, with a main body member,

' of a set of radially expanding shoes carried thereby, means to expand the shoes and an 'indlcating stop device engageable with said means to limit the expansion, of .the shoes,

' said'last named device 'comprising a collar rotatable .on the main body member; a nonarotatable floosely carried by the collar 1 and cooperating-therewith, and connection means. betweenthe collar-and body member 1 wherebyi rotation of the collar ma f cause translation of the ring for varying 't e limit of ex ansioir ofth-shoes- 6. n, at lappingtool {of the classidescribed, thejcombination with a main body member,

. ofradiallyexpandingshoes carried thereby,

'abrading elements carried bysaid radially expanding shoes, means for expanding the:

shoes, anindicating stop device onthe body operatively connected with the expanding means to limit movement of the latter, said device comprising a collar threaded on the body and non-rotatable means loosely carried by the collar and extending around the body and means for interlocking the collar and the non-rotatable means.

7 r In means for perfecting b'ores a tubular element including an externally threaded 'shank provided, near one end thereof, with a said shank; one. of which, regulates the'bias applied to said plunger, the other of which limits the movement of said plunger. I

8. In means for perfecting bores: a tubular element including an externally threaded shank rovided, near one end thereof, with a cutter ead carrying movable shoes and having openings for the guidance of pressurereceiving partsof said shoes; expanding means for said shoes including a plunger carryin a stop part and longitudinally mov able wit in said shank. and slidably engaging said pressure-feceivin parts; separately adjustable collars on sai shank; one of which enga es said stop part to limit the plunger trave means for biasing said plunger adjustable by the other of said collars, and

having openings for the guidance of pressurereceiving parts of saidshoes; expanding means for said shoes including a plunger carrying astop member and longitudinally movable within said shank and slidably engaging said pressure-receiving parts separately adjiistable collars on said shank; one of which is engageable with said stop member for'limiting the plunger travel, andmeans for applying an advancing bias to said plunger adjustable by said other collar.

10. In means for perfecting bores: atubular element including an externally threaded shank provided, nearone end thereof, with a I cutter head carrying movable shoes and having openings forthe guidance of pressure-receiving parts of said shoes; e'xpanding'means for said shoes including a plunger carrying a; stop member and longitudinally. movable within saidshank' and slidably engaging said pressure-receiving parts separately adj'ustable'collars on said' shank; one of which adjustably applies a pressure to advance said plunger, the other of which limits said advance by engagement with said stop member.

11; In means for perfecting bores: a tubular element including an externally threaded shank provided, near onend thereof, with a cutter head carrying movable shoes and having openings for the guidance of pressure-- receiving parts of said shoes; expanding means for said shoes including a plunger.

carrying a stop member longitudinally mov-l able within said shank and slidably engaging said pressure-receiving parts;'a biasing element associated with said plunger; separately adjustable collars on said shank; one

means for said shoes including a plunger car'- rying' stop parts and longitudinally movable within said shank and slidably engaging said pressure-receiving parts; separately adjustable collars on said shank; and-means restrained by said collars, resiliently to advance said plunger and variably to predetermine a limit to-such advance by engagement-with said stop parts,'said shank being externally threaded, and the collar of said limit-predetermining means being rotatable thereon and provided with'index means slidable "upon said shank.

13. In means for perfecting bores: a tubular element including an externally threaded shank provided, nearone end'thereof, with a cuttenhea'd carrying movable shoes and hav-' ing openings for the guidance of pressurereceiving parts of said shoes; expand ng means for said shoes including a plunger car rying stop parts and longitudinally movable within said shank and slidably engaging said pressure-receiving parts; separately ad usttermine a limittosuch advance by engage-- able collars on said shank; and means restrained by said collars, resiliently to advance said plunger and. variably to prede-' ment with said stop parts,saidshank being externallythreaded, and the collar of cutter head. carrying movable shoes and havr" said limit-predetermining means being rotatable thereon and. provided with. index means .slidable upon said shank and slotted to receive astop element on said plunger;

' 14. In means forgierfecting bores: a tubular-element including an externally threaded shank provided, near one end thereof, with a ing openings for the guidance of pressurereceiving parts of said shoes; expanding a' plunger. carrying stop parts and longitu ally movmeansfor said. shoes includin' able within said shank and slidably engaging said pressure-receiving parts; separately adjustable collars on said shank; and means restrained by said collars, resiliently to ad.- vance said plunger and variably to predetermine a limit to such advance by engagement with said stop parts,said shank being externally threaded and the collar of thread limit predetermining means being correspondingly threaded and provided with a non-rotary stop means for engagement by the mentioned stop parts on said plunger.

15. In means for perfecting bores: a tubular element including an externally threaded shank provided,-near one end thereof, with a cutter head carrying movable shoes and having'openings for the guidance of pressurereceiving parts of said; shoes; exjpanding means for said shoes including a plunger carrying advancing and 'stop members and longitudinally movable within said shank and slidably engaging said pressure-receiving parts biasing means between said members; separately adjustable collars on said shank; one of which is engageable with, said advancing member, the other of which is en-- gageable with said stop member.

16. In meansfor perfecting bores: a tubular element including an externally threaded shank provided, near one end thereof, with a cutter head carrying movable shoes and having openings for the guidance of pressurereceiving parts of said shoes; expanding means for said shoes including a plunger carrying stop parts and longitudinally movable within said shank and slidably engaging said pressure-receiving parts; separately .adjustice able collars on said shank; and means restrained 'by said collars, resiliently to adsaid shoes.

17. In means forperfecting bores a tubular element including an externally threaded shank provided, near 'one end thereof, with a cutter head carrying movable shoes and having openings for the guidance of pressurere-. celving parts of said shoes; expanding means (for said shoes includinga plunger carrying a stop part and longitudinally movable within said shank and slidably engaging said pressure-receiving part-s; biasing means for said/plunger; separately adjustable collars on said shank; one of whic regulates said bias, the other of which limits the advanceof'said plunger, and additional biasing means tending to retract'said shoes.

1 8. In means for perfecting bores: a tubu lar element includingan externally thre ed' shank provided near one end th ereof,'with' a emma cutter head carrying mov'able shoes and hsving openings for the uidance of pressurs-resewing parts of said s oes; expanding means for said shoes including a. filunger carrying a stop part and longitu ins y movable within said shank and slidably engaging said pressure-receiving parts; separately adjustable collars on said shank for applyingss bias to said plunger and for limiting the plungers advance through the engagement of said step part, the ends of said tubular element being interiorly "threaded, and means attachable to said end of the tubular member through the medium of said threads for centering said head during sdres e'E shees.

In testimsny my sig nature. 

